Particle on String Executing Circular Horizontal Motion

When analysing the motion of the particle we should resolve vertically and horizontally.

Resolving vertically we obtain(1)

Resolving horizontally, we have to use the fact that the acceleration for a particle moving in a circle is of magnitudeorand directed towards the centre of the circle. We apply


(2) divided by (1) gives


Unlike as in simple harmonic motion the period does depend on the size of the motion.